error: this `.filter_map` can be written more simply using `.filter`
  --> $DIR/unnecessary_filter_map.rs:11:13
   |
11 |     let _ = (0..4).filter_map(|x| if x > 1 { Some(x) } else { None });
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `-D clippy::unnecessary-filter-map` implied by `-D warnings`

error: this `.filter_map` can be written more simply using `.filter`
  --> $DIR/unnecessary_filter_map.rs:12:13
   |
12 |       let _ = (0..4).filter_map(|x| {
   |  _____________^
13 | |         if x > 1 {
14 | |             return Some(x);
15 | |         };
16 | |         None
17 | |     });
   | |______^

error: this `.filter_map` can be written more simply using `.filter`
  --> $DIR/unnecessary_filter_map.rs:18:13
   |
18 |       let _ = (0..4).filter_map(|x| match x {
   |  _____________^
19 | |         0 | 1 => None,
20 | |         _ => Some(x),
21 | |     });
   | |______^

error: this `.filter_map` can be written more simply using `.map`
  --> $DIR/unnecessary_filter_map.rs:23:13
   |
23 |     let _ = (0..4).filter_map(|x| Some(x + 1));
   |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

error: aborting due to 4 previous errors